package com.people.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringUtil implements ApplicationContextAware{
	 private static ApplicationContext applicationContext = null;
	 
	    @Override
	    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
	       if(SpringUtil.applicationContext == null){
	           SpringUtil.applicationContext  = applicationContext;
	       }
	       System.out.println("---------------------------------------------------------------------");
	       System.out.println("---------------------------------------------------------------------");
	       System.out.println("========ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="+SpringUtil.applicationContext+"========");
	       System.out.println("---------------------------------------------------------------------");
	    }
	   
	    //获取applicationContext
	    public static ApplicationContext getApplicationContext() {
	       return applicationContext;
	    }
	   
	    //通过name获取 Bean.
	    public static Object getBean(String name){
	       return getApplicationContext().getBean(name);
	    }
	   
	    //通过class获取Bean.
	    public static <T> T getBean(Class<T> clazz){
	       return getApplicationContext().getBean(clazz);
	    }
	   
	    //通过name,以及Clazz返回指定的Bean
	    public static <T> T getBean(String name,Class<T> clazz){
	       return getApplicationContext().getBean(name, clazz);
	    }
}
